US Bridges

Mn 57 over N Br Mid Fk Zumbro River

Good

Dodge County, Minnesota · 4.3 MI N of JCT Csah 22 · Structure no. 20015

Built
2019
6 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete Continuous
Length
115 ft
3 main spans
Daily traffic
1,600
2019 count
Owner
State
State Highway Agency

About this bridge

Mn 57 over N Br Mid Fk Zumbro River is a concrete continuous slab carrying Mn 57 over N Br Mid Fk Zumbro River in Dodge County, Minnesota. It was built in 2019, so it is 6 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,600 vehicles a day, roughly 8% of them trucks, projected to reach 1,600 by 2039. The structure is 115 ft (35.1 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMn 57
CrossesN Br Mid Fk Zumbro River
Location4.3 MI N of JCT Csah 22
RouteState Highway 57
Coordinates44.19548, -92.78525
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating42.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length115 ft (35.1 m)
Longest span43 ft (13.1 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2019)
Projected traffic1,600 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 57 over N Br Mid Fk Zumbro River built?

It was built in 2019, making it 6 years old in 2025.

What condition is Mn 57 over N Br Mid Fk Zumbro River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Mn 57 over N Br Mid Fk Zumbro River carry?

About 1,600 vehicles per day (2019 count), of which roughly 8% are trucks.

How long is Mn 57 over N Br Mid Fk Zumbro River?

The structure is 115 ft (35.1 m) long with a longest span of 43 ft (13.1 m) and a deck 39 ft wide.

Who owns Mn 57 over N Br Mid Fk Zumbro River?

It is owned by the State Highway Agency.